Re: [PATCH v7 3/4] driver core: platform: unify release path

From: Bartosz Golaszewski

Date: Wed Jul 15 2026 - 11:25:59 EST


On Wed, 15 Jul 2026 17:19:52 +0200, Danilo Krummrich <dakr@xxxxxxxxxx> said:
> On Wed Jul 15, 2026 at 5:06 PM CEST, Bartosz Golaszewski wrote:
>> On Wed, 15 Jul 2026 15:52:07 +0200, Bartosz Golaszewski <brgl@xxxxxxxxxx> said:
>>> On Mon, 13 Jul 2026 20:45:13 +0200, Danilo Krummrich <dakr@xxxxxxxxxx> said:
>>>> On Mon Jul 13, 2026 at 5:11 PM CEST, Bartosz Golaszewski wrote:
>>>>
>>>> So, either we have to special case platform_device_set_of_node() too (for the
>>>> case that a swnode is set already), or just require that the function must only
>>>> be called when no node has been set, as all users already do; I'd go for the
>>>> latter.
>>>
>>> This sounds good too and it should be easy to implement another test case while
>>> at it.
>>
>> Oh but wouldn't that require us to introduce an integer return value for these
>> functions? Or are you talking about simply updating the API contract?
>
> Yes, we could update the API contract; we could also consider adding a WARN_ON()
> for the case a node is already set.
>
>> I think calling device_remove_software_node() on
>> is_software_node(dev_fwnode(dev)) in platform_device_set_fwnode() be enough
>> to handle that case, right?
>
> Yes, we can special case it, but the "replace the existing node if any" part of
> that function is already dead code.
>
> So, if no one needs it now, I'd rather remove it and wait for someone to have a
> valid use-case.
>

Ok, will do that.

While at it: the other dependency of this series is:

https://lore.kernel.org/all/20260713-swnode-fw-devlink-v4-0-d4f2dee27ad9@xxxxxxxxxxxxxxxx/

It's been reviewed and I think it's ready. It shouldn't conflict with the other
dependency that Greg already queued. Would you mind picking patches 1-4 from
that series into an immutable branch based on v7.2-rc1 and taking them through
the driver core tree and I'd queue patch 5 through the GPIO tree after fixing
conflicts with other GPIO kunit tests I already picked up?

Thanks,
Bartosz